Portage, WI Radon Mitigation and Testing

Q: What is the average radon level in Portage, WI?

Based on 1 user-submitted tests, the average radon level is 9.00 pCi/L.

Q: What EPA Radon Zone is Portage in?

Portage is in Columbia County, EPA Zone 2.

Q: How much does radon mitigation cost in Portage?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Avg: 9.00 pCi/L

Columbia County

EPA Zone 2

1 user test

Portage in Columbia County recorded a notably high radon reading of 9.0 pCi/L, more than doubling the EPA's 4.0 pCi/L action threshold. This Madison metro area community sits on glacial deposits over sandstone bedrock, geological conditions known to produce elevated radon levels in south-central Wisconsin. Homeowners in zip code 53901 should prioritize radon testing and mitigation, particularly in homes with basements or lower-level living spaces.

9.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Portage, WI. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Portage, WI Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Portage, WI Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Portage, Wisconsin Radon Levels

User-submitted radon test readings from homes in the Portage area.

Radon Level	City	Home Age	Foundation	Submitted
9 pCi/L	Portage, WI	0-20 Years	Full Basement	Dec 2020

Have a radon test result for Portage? Submit your reading to help other homeowners.

Portage Radon Facts

Key details about the radon risk profile for Portage and the 53901 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Columbia County, WI

Zip Code

53901

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

9.00 pCi/L

User Tests Submitted

Portage and the 53901 zip code are located in Columbia County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Portage, WI

What is the average radon level in Portage, WI?

Based on 1 user-submitted test, the average radon level in Portage is 9.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Portage in?

Portage and the 53901 zip code are in Columbia County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Portage?

Radon mitigation in Portage typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Portage?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Wisconsin

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Milwaukee	10.00 pCi/L	3
Prairie Du Chien	10.00 pCi/L	2
Stevens Point	5.50 pCi/L	2
Menomonie	10.00 pCi/L	1
Delavan	6.00 pCi/L	1
Shawano	No submissions	0
Sturgeon Bay	No submissions	0